The time evolution of backscattered and sidescattered microwaves from a plane conductor
covered by a pulsed-plasma column has been studied; transmitted signals along the axial and
transverse directions of the column have ...

Detailed experimental studies on sheet relativistic
electron beam propagation through a long planar wiggler are
reported and compared with numerical simulations. The planar
wiggler has 56 periods with a period of 9.6 ...

A 1 MW (cw), millimeter wave FEL (X, « 0.5 mm) is currently under development with an application for heating
fusion plasmas. Two salient features of the FEL are the use of a short-period wiggler £w < 10 mm) electromagnet
and ...

We report an observation of millimeter-wave (94 GHz) amplification in a sheet beam, short period,
planar wiggler: free electron laser amplifier. The observed gain is about 5 dB for a 530 keV, 4 A
beam through a 54 cm ...

The collective acceleration of ions (H,C,N) from
a well-localized ion source immediately downstream of
a relativistic electron beam diode is experimentally
investigated, The ions are produced either in a wellconfined
gas ...

Experimental studies of the reflection, transmission, and absorption of high-power microwave
pulses from a plasma-covered plane conducting boundary are presented. Under optimum
conditions, backscattered rf power is ...

Summary form only given, as follows. It has previously been demonstrated that a plasma-loaded backward wave oscillator (BWO) powered by a relativistic electron beam can generate hundreds of megawatts of microwave radiation ...

Internal field-emission breakdown in the electrodynamic
structures of high-power microwave (HPM) devices can
seriously limit the device’s output power and pulse duration.
Increasing the diameter of the electrodynamic ...

Destler, William; Rodgers, J.; Segalov, Z.(Copyright 1989 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics., 1989-10-01)

Detailed experimental studies of a collective acceleration experiment in which a time sequenced
laser-generated ionization channel is used to control the propagation of an intense
relativistic electron bearnfront are ...

The generation of millimeter wave radiation from the interaction of a rotating electron beam (2
MeV, I kA, 5 nsec) with an azimuthally periodic wiggler magnetic field has been studied
experimentally. Calculations of the ...

Presents a study which examined the propagation of intense relativistic electron beams into evacuated nonconducting drift tubes after passage through a localized plasma source. Details of the time-integrated photographs ...

A three-wave free-electron laser (FEL) was operated with
a powerful 8.4-GHz electromagnetic “pump” wave replacing the usual
magnetostatic wiggler. The presence of a uniform axial magnetic field
B,, produced cyclotron-harmonic ...

The use of a small period wiggler (Cw < 1 cm) together with a sheet electron beam
has been proposed as a low cost source of power for electron cyclotron resonance heating
(ECRH) in magnetic fusion plasmas. Other potential ...

This paper reports on experimental and theoretical studies of a fundamental mode, large-orbit
gyrotron oscillator designed to produce high-power radiation in the rectangular TE,a mode at
about 650 MHz. A basic linear ...